Android parses the sample xml data sent from the server side

Android interacts with the server, sometimes in the form of xml when there is a large amount of data. Here, the server sends xml data to the Android client and the Android client parses it.

On the server side, I use the third package of dom4j to organize xml data, which can be downloaded by baidu. The Android client USES XmlPullParser to parse xml data.

Server-side code:

 
package servlet; 
import java.io.IOException; 
import java.io.PrintWriter; 
import java.net.URLDecoder; 
import java.sql.Connection; 
import java.sql.ResultSet; 
import java.sql.Statement; 
import javax.servlet.ServletException; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
import org.dom4j.Document; 
import org.dom4j.DocumentHelper; 
import org.dom4j.Element; 
public class getSms extends HttpServlet { 
public getSms() { 
super(); 
} 
public void destroy() { 
super.destroy(); // Just puts "destroy" string in log 
// Put your code here 
} 
public void doGet(HttpServletRequest request, HttpServletResponse response) 
throws ServletException, IOException { 
response.setContentType("text/html; charset=UTF-8" ); 
request.setCharacterEncoding("UTF-8"); 

 
Document document = DocumentHelper.createDocument(); 
Element persons = DocumentHelper.createElement("persons"); 
document.add(persons); 

 
persons.addElement("address").addText(" nanjing "); 
persons.addElement("id").addAttribute(1); 
persons.addElement("thread_id").addText(2); 
persons.addElement("date").addText("2013"); 
persons.addElement("status").addText(-1); 
persons.addElement("type").addText(0); 
persons.addElement("body").addText(" test "); 

 
String xml = document.asXML(); // with dom4j organization 1 a XML string  
response.setContentType("text/xml; charset=UTF-8"); // Sets the type of the return value  
response.getOutputStream().write(xml.getBytes("UTF-8")); // Set the return value  
} 
public void doPost(HttpServletRequest request, HttpServletResponse response) 
throws ServletException, IOException { 
doGet(request,response); 
} 
public void init() throws ServletException { 
// Put your code here 
} 
} 

Android client:

 
String url="http://10.0.2.2:8080/sms_server/servlet/getSms"; 
try{ 
URL u = new URL(url); 
HttpURLConnection conn = (HttpURLConnection) u.openConnection(); 
conn.setRequestMethod("GET"); 
if (conn.getResponseCode() == 200) { 
InputStream in = conn.getInputStream(); 
XmlPullParser parser = Xml.newPullParser(); 
parser.setInput(in, "UTF-8"); 
int event = parser.getEventType(); 
while (event != XmlPullParser.END_DOCUMENT) { 
Log.i("start_document", "start_document"); 
switch (event) { 
case XmlPullParser.START_TAG: 
if ("address".equals(parser.getName())) { 
String address=parser.nextText(); 

} 
if ("id".equals(parser.getName())) { 
int id=parser.getAttributeValue(0); 
} 
if (("thread_id").equals(parser.getName())) { 
String thread_id=parser.nextText(); 
} 
if ("date".equals(parser.getName())) { 
String date=parser.nextText(); 
} 
if (("status").equals(parser.getName())) { 
String status=parser.nextText(); 
} 
if ("type".equals(parser.getName())) { 
String type=parser.nextText(); 
} 
if ("body".equals(parser.getName())) { 
String body=parser.nextText(); 
} 
break; 
case XmlPullParser.END_TAG: 
break; 
} 
event = parser.next(); 
} 
} 
}catch(Exception e){ 

}